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Proceedings Paper

Performance Of A Passive And Active Optical Imager In The Near-mm Wave Part Of The Spectrum
Author(s): G. T. Wijntjes; N. J. E. Johnson
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Paper Abstract

Performance parameters for a passive and active FLIR-type imager will be presented. Refrigerated photon detectors or power detectors (bolometers) have nearly background-limited performance in the NMM spectral region. An imager equipped with such a detector will therefore have high sensitivity which is further enhanced by the fact that the bandwidth can be extremely broad and, in fact, can cover more than one atmospheric window. System performance of the NMM FLIR will be derived from the detector performance figures, i.e., detector sensitivity, system bandwidth, receiver aperture, field of view and dwell time. Target recognition capability will also be given in terms of target albedo, target-to-background contrast, range and atmospheric conditions. It will be shown that techniques developed for FLIR's also can enhance the performance of NMM wave imagers. Conversion to an active mode of operation using, for example, a Far IR laser and the resulting performance will also be presented.

Paper Details

Date Published: 27 February 1981
PDF: 7 pages
Proc. SPIE 0259, Millimeter Optics, (27 February 1981); doi: 10.1117/12.959649
Show Author Affiliations
G. T. Wijntjes, Block Engineering (United States)
N. J. E. Johnson, Block Engineering (United States)


Published in SPIE Proceedings Vol. 0259:
Millimeter Optics
George A. Tanton, Editor(s)

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